#include <iostream>
using std::cout;
using std::endl;

void test0(){
    int x = true;
    int y = false;
    cout << x << endl;
    cout << y << endl;

    bool b1 = 1;
    bool b2 = 100;
    bool b3 = 0;
    bool b4 = -1;
    if(b4){
        cout << "hello" << endl;
    }

    cout << b1 << endl;
    cout << b2 << endl;
    cout << b3 << endl;
    cout << b4 << endl;

    cout << endl;
    cout << sizeof(b4) << endl;
}

int main(void){
    test0();
    return 0;
}
